The moral is obvious. You can't trust code that you did not totally create yourself. (Especially code from companies that employ people like me.) No amount of source-level verification or scrutiny will protect you from using untrusted code.

Humans are the story species. We need one to grasp onto something in order to even think about it. I was a math major in college, and that's thinking without a story. Hard to do. But I loved computers because there is a story about every bit of code, and the apps they form.